The Ultra Guardians base is overseen by Lusamine's Clefable. It is located underneath the Pokémon School and was built by the Aether Foundation. When accepting a mission, the Ultra Guardians will shout out the word "Ultroger" (Japanese: ウルトラジャーUltroger).

History

The Ultra Guardians embarked on their first mission in A Mission of Ultra Urgency!, where they were sent out to catch a Buzzwole. Ash eventually managed to do so, allowing it to be sent back to Ultra Space.

The Ultra Guardians embarked on their second mission in Rise and Shine, Starship!, where they were sent out to catch the Celesteela they discovered and dug out of a hillside the day before. However, they were unable to catch it due to it being rooted down and were instead forced to create a defensive wall around it to protect the surrounding area from the fire produced by its takeoff.

The Ultra Guardians embarked on their third mission in Twirling with a Bang!, where they were sent out to catch a Blacephalon and Xurkitree. Their initial attempts to catch them proved unsuccessful when the two Ultra Beasts started a performance battle with each other. Ash eventually came up with an idea of the group using their Pokémon to create their own performance to distract the two Pokémon. The plan worked, giving Ash and Lycanroc the chance to perform Splintered Stormshards on the Ultra Beasts, weakening them enough for Lillie and Lana to then catch them. The next day, they were safely sent back to their own home worlds.

In Dummy, You Shrunk the Kids!, there was no actual Ultra Guardian mission, but Kiawe, Lana, and Mallow used their Ultra Guardians equipment and Ride Pokémon to help locate Ash, Lillie, and Sophocles, who had been accidentally shrunk by one of Faba's inventions and subsequently gotten lost.

The Ultra Guardians embarked on their fourth mission in The Long Vault Home!, where they were sent out to catch the Stakataka that had appeared at the Pokémon School. However, they were unable to catch it, as it was able to move its blocks around to avoid all of their Beast Balls, forcing the Ultra Guardians to leave it alone for the night while they came up with a different strategy. During the night, Stakataka moved to Viren's construction site, where he and his henchmen mistook it for a pedestal meant for Viren's statue. When the statue was placed on top of Stakataka, it became furious and started stomping around in an attempt to get the statue off of itself. Eventually, Ash and Pikachu were able to remove the statue, causing Stakataka to calm down. Ash also managed to convince Stakataka to let him catch it so that they could return it home. Thus, as the evening rolled around, Stakataka was returned to its home dimension at the Pokémon School.

In Filling the Light with Darkness!, mysterious dark clouds appeared over the Alola region, causing all of the adults in Alola to lose their energy and motivation. The next day, the Ultra Guardians embarked on their fifth mission to investigate the situation at the Altar of the Sunne. Shortly after arriving, Lusamine revealed that Gladion would be joining them as a new member. In order to disperse the clouds, Ash, Kiawe, Lana, and Gladion combined their Z-Power to fuel a device that successfully made the clouds disappear, but they uncovered a hidden Ultra Wormhole in the process. Afterwards, Lusamine took the Ultra Guardians into the ruins, where she showed them a mural depicting the Blinding One. Before any attempt to translate the mural could be done, the Ultra Guardians were forced to return outside, where they found the wormhole increasing in size. At that moment, a Lunala emerged from the wormhole with a Necrozma (whose species could not be identified and was called UB Black for the time being) chasing after it.

The mission continued in Full Moon and Many Arms!, where, despite their best efforts, Necrozma merged with Lunala and became Dawn Wings Necrozma. Nebby attacked Dawn Wings Necrozma using Sunsteel Strike, which freed Lunala from Necrozma's control. However, Necrozma then merged with Nebby, subsequently becoming Dusk Mane Necrozma. Necrozma disappeared through an Ultra Wormhole immediately afterward, leaving Lunala injured. The Ultra Guardians took Lunala back to the Pokémon School to recover. They managed to succeed in this endeavor with the help of Z-Power of their Z-Rings.

The Ultra Guardians on their Ride Pokémon

In The Prism Between Light and Darkness!, the Ultra Guardians and Lunala traveled through an Ultra Wormhole and arrived at Poipole's home world. Shortly after arriving, Poipole introduced everyone to its other Poipole friends and the leader of its hive, Naganadel. With its telepathy, Naganadel revealed to everyone how Necrozma lost its light protecting the world from a meteor, causing everything to become shrouded in darkness. Realizing that Necrozma is the Blinding One spoken of in Alolan legends, the Ultra Guardians decided the best way to free Nebby and restore Poipole's world to its former self was to help Necrozma regain its true form by giving it their Z-Power. After encountering Necrozma again, Ash, Kiawe, Lana, and Gladion fired simultaneous Z-Moves at the Prism Pokémon.

The mission came to an end during Securing the Future!, where they, along with the people and Pokémon of Alola, were able to return Necrozma to its original form. This helped restore Poipole's homeworld in the process. With the Ultra Wormhole about to close, they left, while Poipole decided to remain behind.

The Ultra Guardians set out on another mission in Sparking Confusion!, this time to Wela Volcano Park, after hearing about unusual activity in the area. They discovered that a group of rock hunters was searching for rocks called Spark Stones, in the process disrupting the feeding rituals of a pack of Alolan Geodude and Graveler living at the volcano. The hunters were attacked by their leader, an Alolan Golem, who began attacking indiscriminately. With help from Metang, Ash, Kiawe, and Sophocles were able to calm the group of Alolan Pokémon and stop the magnetic interference coming from the Park. The leader Golem later joined a trio of Hikers who volunteered to conduct future patrols of Wela Volcano Park.

The Ultra Guardians set out on another mission in Beauty is Only Crystal Deep!. One night, Pheromosa appeared from an Ultra Wormhole and began stealing Z-Crystals from Trainers. Attempts by the Ultra Guardians to catch it failed, so they and Faba formed a plan to lure Pheromosa in with their Z-Crystals, which would be surrounded by glue. This failed, however, when Meowth, who had fallen in love with Pheromosa, stepped on the glue instead, allowing Pheromosa to grab the Z-Crystals without getting stuck. The Ultra Guardians were eventually able to catch and return Pheromosa when it was defeated by Bewear.

In Living on the Cutting Edge!, the Ultra Guardians were alerted to the presence of a Kartana that was randomly cutting up objects. They were dispatched and split up to look for it, eventually finding it outside Viren's hotel. Kartana headed for the Pokémon School, but they were able to stop it from causing any further damage. They attempted to catch Kartana, only for it to slice the Beast Ball into pieces. They were contacted by Lusamine, who warned them of a meteor heading for the Pokémon School, and they attempted to stop it from hitting its target. Their attacks failed to stop the meteor, but Kartana was able to cut it into harmless pieces, which fell into the ocean. Kartana then opened up its own Ultra Wormhole by slicing through space and returned home.

Pokémon

Assisted

Buzzwole entered Alola through an Ultra Wormhole at Melemele Meadow, prompting the Ultra Guardians to embark on their first mission. They chased the Swollen Pokémon to Mahalo Trail, where it was eventually caught by Ash. It was then brought back to Melemele Meadow, allowing it to return back home through a new wormhole opened by Professor Burnet.

Celesteela was found by Sophocles while camping out at the Bamboo Hill. It actually arrived in Alola approximately 200 years ago in what was believed to be a naturally appearing Ultra Wormhole, and was stuck in the ground ever since, passively absorbing energy for a take off. After it was dug up, Celesteela was discovered by Lusamine's group, who told the Ultra Guardians to go out and catch it. Their attempts to catch it failed, as Celesteela was too deeply rooted to the ground at the time. When they discovered that Celesteela was preparing to take off, the Ultra Guardians realized that the flames produced when it flies would set the surrounding area ablaze. Using their Ride Pokémon, the Ultra Guardians were able to construct a defensive barrier, allowing Celesteela to safely blast off and return back to its home.

Blacephalon first appeared in Twirling with a Bang! during a fireworks show. Ash and his classmates were amazed by its performance, believing it to be a part of the show.

The next day, they learned that it was actually an Ultra Beast and set out to catch it. Blacephalon appeared just as Kiawe was about to catch Xurkitree and began to have a performance battle with it, preventing the Ultra Guardians from catching it. With the Ultra Guardians' Pokémon providing a distraction and Ash's Lycanroc weakening Blacephalon with Splintered Stormshards, Lillie was eventually able to catch it, allowing it to be sent back home.

Xurkitree appeared in Alola one night in Twirling with a Bang!. The next day, the Ultra Guardians were dispatched to catch it, as it was draining electricity from a power line. Just when Kiawe was about to catch it, however, Xurkitree began a performance battle with Blacephalon, preventing the Ultra Guardians from catching it. With the Ultra Guardians' Pokémon providing a distraction and Ash's Lycanroc weakening Xurkitree with Splintered Stormshards, Lana was eventually able to catch it, allowing it to be sent back home.

Stakataka entered Alola through an Ultra Wormhole at the Pokémon School. The initial attempts by the Ultra Guardians to catch it failed due to it managing to avoid all of their Beast Balls, and during the following night, it moved to a construction site owned by Viren, where it was mistaken for a pedestal for a statue of Viren. Once the statue was placed on top of it, Stakataka became angry and started rampaging around until Ash removed the statue. Stakataka then let itself be caught by Ash upon learning that he wanted to help it get back home. Later, back at the Pokémon School, Stakataka was safely returned to its home dimension through an Ultra Wormhole.

The Ultra Guardians assisted Lunala during its battle with Necrozma. After being freed from Necrozma's control with the help of Solgaleo, Lunala crashed onto a beach on Melemele Island. After fending off Matori and her Matori Matrix, Lunala was brought to the Ultra Guardians base, where, with the combined light of the Z-Rings belonging to Ash, Kiawe, Lana, and Gladion, Lunala made a full recovery. In Securing the Future!, it combined its power with Ash, Gladion, and Solgaleo to give enough Ultra Aura to Necrozma so it could return it to its Ultra form.

Solgaleo came to the aid of the Ultra Guardians after Lunala was captured and absorbed by Necrozma. Solgaleo succeeded in separating the two, but was then absorbed afterwards. It was freed during the final confrontation in Securing the Future!, where it combined its power with Ash, Gladion, and Lunala to give enough Ultra Aura to Necrozma so it could return it to its Ultra form.

Necrozma once acted as a guardian to the beings that lived in Poipole's world, but it lost its power and light while protecting them from a meteor. It fell into hibernation until it sensed Solgaleo and Lunala in the vicinity, and began pursuing them relentlessly. At the same time, it began sapping the Ultra Aura of the adults in Alola through an Ultra Wormhole. In Full Moon and Many Arms!, the Ultra Guardians tried to defend Lunala and Solgaleo from Necrozma, but Necrozma absorbed Solgaleo, thus becoming Dusk Mane Necrozma, and escaped back into its Ultra Wormhole. This did, however, stop the draining effect on Alola's citizens. In the interim, Necrozma, having no records of being seen outside of its Ultra form, was given the code name "UB Black".

Upon assisting Naganadel, the Ultra Beast revealed to the Ultra Guardians that UB Black and the Blinding One are one and the same, and that its true name is Necrozma. They also learned the cause of its behavior. In Securing the Future!, after freeing Solgaleo from Necrozma's grasp, the Ultra Guardians, their Pokémon, and all of the people of the Alola region joined forces to give Necrozma enough Ultra Aura so it could return to normal, restoring Poipole's world in the process.

Pheromosa entered Alola through an Ultra Wormhole and began attacking Trainers to steal their Z-Crystals. Meowth fell in love with Pheromosa and thwarted several attempts by the Ultra Guardians to catch it. Pheromosa was eventually defeated by Bewear, allowing Pheromosa to be caught and returned home.

Befriended

Kartana appeared in Alola through an Ultra Wormhole in the sky. It started slicing through various objects across Melemele Island, prompting Ash and his classmates to embark on their eighth mission as the Ultra Guardians. Their efforts to catch it ended in failure, and were soon overshadowed by a meteor falling towards Pokémon School. Unexpectedly, Kartana sliced the meteor into small, harmless pieces before it could hit the building, saving the school. Afterwards, it created itself a new Ultra Wormhole by repeatedly slicing the air in rapid succession, and then returned itself home.

Trivia

The Ultra Guardians share similarities with International Rescue from the 1960s TV series Thunderbirds in the sense that they suit up and launch. The scene of Alolan Exeggutor moving their heads is also a reference to that series. In addition, their use of "Ultroger" can be a reference to Thunderbirds' saying "F.A.B."

Gladion's uniform being a different design may be a reference to the long-running Super Sentai/Power Rangers series. Many seasons of the series typically have the main characters joined by a "Sixth Ranger" midway into the series. Sixth Rangers typically have their costume differ in design from the core team to make them more distinct.